[BUG] Ununique mutable items are removed from ItemSlotViewCollection (as hotbar) if you drag another of the same type but with different attrs over it

First off, Im not sure if someone should even have that setup, but...

Let's say you have

Syringe with attribute Index = 0
and
Syringe with attribute Index = 1 (changed at runtime upon spawning)

If the one with index 0 is on the Hotbar and you drag the one with index 1 over it the one with Index 0 gets removed, nowhere to be found in any inventories.
 
Someone reported an error happening when drag/drop an item on the same slot, I found a fix but it's not public yet.

I tested your setup of two unique items of the same definition with different attribute values, and it works on my machine, so I think your issue might be the same as the other user:

We'll make an update later this week, this fix will be included
 
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